[PATCH 5.10 359/406] igb: Change IGB_MIN to allow set rx/tx value between 64 and 80

Greg Kroah-Hartman
2023-09-17T19:40:44Z

From: Olga Zaborska <olga.zaborska@intel.com>

[ Upstream commit 6319685bdc8ad5310890add907b7c42f89302886 ]

Change the minimum value of RX/TX descriptors to 64 to enable setting the rx/tx
value between 64 and 80. All igb devices can use as low as 64 descriptors.
This change will unify igb with other drivers.
Based on commit 7b1be1987c1e ("e1000e: lower ring minimum size to 64")

Fixes: 9d5c824399de ("igb: PCI-Express 82575 Gigabit Ethernet driver")
Signed-off-by: Olga Zaborska <olga.zaborska@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/intel/igb/igb.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h
index e6d2800a8abc5..da0e3897e6831 100644
--- a/drivers/net/ethernet/intel/igb/igb.h
+++ b/drivers/net/ethernet/intel/igb/igb.h
@@ -34,11 +34,11 @@ struct igb_adapter;
/* TX/RX descriptor defines */
#define IGB_DEFAULT_TXD 256
#define IGB_DEFAULT_TX_WORK 128
-#define IGB_MIN_TXD 80
+#define IGB_MIN_TXD 64
#define IGB_MAX_TXD 4096

#define IGB_DEFAULT_RXD 256
-#define IGB_MIN_RXD 80
+#define IGB_MIN_RXD 64
#define IGB_MAX_RXD 4096

#define IGB_DEFAULT_ITR 3 /* dynamic */
--
2.40.1